Document storing devices

Claim 1

A DOCUMENT STORING DEVICE COMPRISING, A COMBINATION, A COMPARTMENT OPEN AT THE TOP; AND A PLURALITY OF DOCUMENT RECEIVING FILES LOCATED SIDE BY SIDE OF SAID COMPARTMENT AND LIFTABLE THEREFROM THROUGH SAID OPEN TOP, EACH OF SAID FILES HAVING A PAIR OF OPPOSITE SUBSTANTIALLY IDENTICAL COVER MEMBERS HAVING RESPECTIVELY SIDE WALLS AND MEANS CONNECTING SAID COVER MEMBERS IN THE REGION OF THEIR BOTTOM ENDS TO EACH OTHER MOVABLE BETWEEN A CLOSED POSITION IN WHICH SAID SIDE WALLS ARE PARALLEL TO EACH OTHER AND AN OPEN POSITION IN WHICH SAID SIDE WALLS INCLUDE AN ANGLE WITH EACH OTHER, AT LEAST ONE MALE AND AT LEAST ONE FEMALE ENGAGING MEANS PROVIDED ON EACH COVER MEMBER, ONE OF SAID ENGAGING MEANS BEING LOCATED IN THE REGION OF THE BOTTOM END OF THE RESPECTIVE COVER MEMBER AND THE OTHER IN THE REGION OF THE TOP END THEREOF, SAID MALE ENGAGING MEANS ON SAID COVER MEMBERS ON ONE FILE CONSTRUCTED TO INTERENGAGE WITH THE FEMALE ENGAGING MEANS OF THE FILES ADJACENT THERETO WHEN SAID ONE FILE IS LIFTED TO ALIGN THE ENGAGING MEANS IN THE REGION OF THE BOTTOM ENDS OF THE COVER MEMBERS THEREOF WITH THE ENGAGING MEANS IN THE REGION OF THE TOP ENDS OF THE COVER MEMBERS OF THE FILES ADJACENT THERETO AND WHEN SAID COVER MEMBERS OF SAID ONE FILE ARE MOVED TO SAID OPEN POSITION SO AS TO HOLD SAID ONE FILE IN OPEN POSITION AND PARTLY RAISED OUT OF SAID COMPARTMENT, SAID ENGAGING MEANS BEING FLUSH WITH SAID SIDE WALLS OF SAID COVER MEMBERS AT LEAST WHEN SAID COVER MEMBERS ARE IN SAID CLOSED POSITION SO THAT SIDE WALLS OF ADJACENT FILES WHEN LOCATED IN SAID COMPARTMENT MAY ABUT AGAINST EACH OTHER OVER THE WHOLE OUTER SURFACE THEREOF.